![German special police walk near the main train station in Cologne, Germany, October 15, 2018, after the train station was closed after hostage-taking. German police have caught a suspected hostage-taker at Cologne’s main train station and freed the hostage, police said on Twitter. (Photo/Agencies)](http://www.ecns.cn/hd/2018/10/16/c8d2990f5b7b44ea9eabc14c4ca935f2.jpg)
German special police walk near the main train station in Cologne, Germany, October 15, 2018, after the train station was closed after hostage-taking. German police have caught a suspected hostage-taker at Cologne’s main train station and freed the hostage, police said on Twitter. (Photo/Agencies)
![German special police walk near the main train station in Cologne, Germany, October 15, 2018, after the train station was closed after hostage-taking. German police have caught a suspected hostage-taker at Cologne’s main train station and freed the hostage, police said on Twitter. (Photo/Agencies)](http://www.ecns.cn/hd/2018/10/16/ec7c1e64bd9147c690fdd9340b6483bd.jpg)
German special police walk near the main train station in Cologne, Germany, October 15, 2018, after the train station was closed after hostage-taking. German police have caught a suspected hostage-taker at Cologne’s main train station and freed the hostage, police said on Twitter. (Photo/Agencies)
![German special police walk near the main train station in Cologne, Germany, October 15, 2018, after the train station was closed after hostage-taking. German police have caught a suspected hostage-taker at Cologne’s main train station and freed the hostage, police said on Twitter. (Photo/Agencies)](http://www.ecns.cn/hd/2018/10/16/450b1ea640544fa08f09ac646511c4a3.jpg)
German special police walk near the main train station in Cologne, Germany, October 15, 2018, after the train station was closed after hostage-taking. German police have caught a suspected hostage-taker at Cologne’s main train station and freed the hostage, police said on Twitter. (Photo/Agencies)
![German special police walk near the main train station in Cologne, Germany, October 15, 2018, after the train station was closed after hostage-taking. German police have caught a suspected hostage-taker at Cologne’s main train station and freed the hostage, police said on Twitter. (Photo/Agencies)](http://www.ecns.cn/hd/2018/10/16/9d16addaf43a4ce6912589976a36b2f8.jpg)
German special police walk near the main train station in Cologne, Germany, October 15, 2018, after the train station was closed after hostage-taking. German police have caught a suspected hostage-taker at Cologne’s main train station and freed the hostage, police said on Twitter. (Photo/Agencies)
![Passengers wait outside the main train station in Cologne, Germany, October 15, 2018, after the train station was closed after hostage-taking. German police have caught a suspected hostage-taker at Cologne’s main train station and freed the hostage, police said on Twitter. (Photo/Agencies)](http://www.ecns.cn/hd/2018/10/16/9065a2c4e9584d54a55bbccbad016dce.jpg)
Passengers wait outside the main train station in Cologne, Germany, October 15, 2018, after the train station was closed after hostage-taking. German police have caught a suspected hostage-taker at Cologne’s main train station and freed the hostage, police said on Twitter. (Photo/Agencies)